@cheprasov/worker-thread/src/Error/WorkerError.js

The WorkerThread wraps a Web Worker with a Promise, also the class creates a worker script on the fly (without having to create separate worker files). You can 'inline' your worker function in the same js file as main logic.

// @flow strict

export default class WorkerError extends Error {

    type: string;
    data: any;

    constructor(type: string, message: ?string = '', data: any = null) {
        super(message);
        this.type = type;
        this.data = data;
    }

    getType(): string {
        return this.type;
    }

    getData(): string {
        return this.data;
    }

}